public void GetFinishedChaptersTest_Passt(int resultCount, List <UserLesson> finishedLessons, List <Chapter> allChapters)
{
if (allChapters == null)
{
_coursesService.Setup(x => x.GetChapters()).Returns((IQueryable <Chapter>)null);
}
else
{
_coursesService.Setup(x => x.GetChapters()).Returns(allChapters.AsQueryable());
}
var result = _resultsManager.GetFinishedChapters(finishedLessons);
Assert.True(result != null);
Assert.True(result.Count == resultCount);
}